HOMEVULNERABILITIESCVE-2017-5334
CRITICAL

CVE-2017-5334

CWE-415Published: March 24, 2017· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attackers to have unspecified impact via crafted policy language information in an X.509 certificate with a Proxy Certificate Information extension.

NVD Source

Technical Analysis

CVE-2017-5334 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

gnu1 product(s)
gnutls
openSUSE1 product(s)
leap
Source: NVD CPE · 11 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://www.openwall.com/lists/oss-security/2017/01/10/7
PATCHhttp://www.openwall.com/lists/oss-security/2017/01/11/4
PATCHhttps://gitlab.com/gnutls/gnutls/commit/c5aaa488a3d6df712dc8dff23a049133cab5ec1b
PATCHhttps://security.gentoo.org/glsa/201702-04
PATCHhttp://www.openwall.com/lists/oss-security/2017/01/10/7
PATCHhttp://www.openwall.com/lists/oss-security/2017/01/11/4
PATCHhttps://gitlab.com/gnutls/gnutls/commit/c5aaa488a3d6df712dc8dff23a049133cab5ec1b
PATCHhttps://security.gentoo.org/glsa/201702-04
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.html
ADVISORYhttp://www.securityfocus.com/bid/95370
ADVISORYhttp://www.securitytracker.com/id/1037576
ADVISORYhttps://gnutls.org/security.html#GNUTLS-SA-2017-1
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.html
ADVISORYhttp://www.securityfocus.com/bid/95370
ADVISORYhttp://www.securitytracker.com/id/1037576
ADVISORYhttps://gnutls.org/security.html#GNUTLS-SA-2017-1

All References (18)

→
http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.htmlThird Party Advisory
→
http://www.openwall.com/lists/oss-security/2017/01/10/7Mailing List · Patch · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2017/01/11/4Mailing List · Patch · Third Party Advisory
→
http://www.securityfocus.com/bid/95370Third Party Advisory · VDB Entry
→
http://www.securitytracker.com/id/1037576Third Party Advisory · VDB Entry
→
https://access.redhat.com/errata/RHSA-2017:2292
→
https://gitlab.com/gnutls/gnutls/commit/c5aaa488a3d6df712dc8dff23a049133cab5ec1bIssue Tracking · Patch · Third Party Advisory
→
https://gnutls.org/security.html#GNUTLS-SA-2017-1Vendor Advisory
→
https://security.gentoo.org/glsa/201702-04Patch · Third Party Advisory · Vendor Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.htmlThird Party Advisory
→
http://www.openwall.com/lists/oss-security/2017/01/10/7Mailing List · Patch · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2017/01/11/4Mailing List · Patch · Third Party Advisory
→
http://www.securityfocus.com/bid/95370Third Party Advisory · VDB Entry
→
http://www.securitytracker.com/id/1037576Third Party Advisory · VDB Entry
→
https://access.redhat.com/errata/RHSA-2017:2292

Quick Facts

CVE IDCVE-2017-5334
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-415
CISA KEVNo
Affected2 vendor(s)
PublishedMar 24, 2017

Related CVEs (CWE-415)

CVE-2018-0101
10.0
CVE-2022-20127
9.8
CVE-2005-1689
9.8
CVE-2022-22086
9.8
CVE-2002-0059
9.8
CVE-2021-23158
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-5334 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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